code: def test_dimension_label(self):
      # Ref: https://github.com/holoviz/holoviews/issues/5386
      data = [
          ["source1", "dest1", 3],
          ["source1", "dest2", 1],
      ]
      df = pd.DataFrame(data, columns=["Source", "Dest", "Count"])
  
      kdims = [
          Dimension("Source"),
          Dimension("Dest", label="Dest Label"),
      ]
      plot = Sankey(df, kdims=kdims, vdims=["Count"])
      plot = plot.opts(edge_color="Dest Label")
  
      # To provoke the error in the issue
      render(plot)
  
file_path: holoviews/holoviews/tests/plotting/bokeh/test_sankey.py
imports: import numpy
  import pandas
  from holoviews import render
  from holoviews.core.data import Dataset, Dimension
  from holoviews.element import Sankey
  from .test_plot import TestBokehPlot, bokeh_renderer
label_desc: Use image node_id 3 for calling the TestSankeyPlot obj's underlying member method code with example usage: obj.test_dimension_label() without return types